Improvement in attaching knobs to their spindles



H. B. TUTHILL, OF NEV vonk, N. Y., AssIeNoE To IIIMsELF, M. o. oGDEN, AND WILLIAM sLAvvsoN.

IMPROVEMENT IN ATTACHING KNOBS TO THEIR SPINDLES.

Specification forming part of Letters Patent No. 89,708, dated May 4, 1869.

To all whom it may concern:

Be it known that I, H. B. TUTHILL, ofthe city, county, and State of New York, have invented a new and Improved Door-Knob Fastening; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing, forming a part of this specification.

This invention relates to a new and improved means for securing door-knobs on their spindles or arbors; and is designed to supersede the screws and washers now used for such purpose.

In the accompanying drawing a longitudinal central section of myinvention is shown.

A represents a knob-spindle, which is of square or rectangular form in its transverse section, as usual, andis iitted in alock, or any suitable catch or latch, in the ordinary way, when such devices are used with the invention. B B' represent the knobs, which are constructed and provided, respectively, with metallic sockets C C', like those in common use, the

interior of the sockets being of such dimenward and the socket released. This construction of the spindle I do not, however, claim. s

My invention consists in providing the socket C' with a fastening, made and arranged as shown. The spring D', in this instance, is attached to the spindle, as shown at g, and catching against a shoulder, h, at the inner side of the socket C. This spring D' is made sufficiently long, in the first place, to admit ofthe .socket C' being adjusted on the spindle to suit the thinnest door that -ismade, and in the event of the device being applied to thicker doors the spring D' is cut off to suit them.

A hole, fi, is made in the socket C', to admit of a rod being inserted to press inward the spring D', when it is required to remove the socket C'.

The invention is extremely simple and efficient, and admits of the knobs being applied to thespindle withagreater facilitythan usual.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The spindle A, constructed as described, with the spring D', adapted to engage With the shoulder formed in the socket C', arranged and operating as described, for the purpose specified.

The above specification sot" my invention signed by me this 9th day of March, 1868.

c H. B. TUTHILL.

Witnesses:

'0. D. MUNN, A. It. HAIGHT. 

